Ever you thought what is inside a mobile phone? how it looks like if you separate the each part? You don't know because you are not a phone preparing technician. However, you are still a regular phone user, so you must know what are you using and how it has inside it.
Philosophical questions such as, where do we go to, where we come from? Although in this case there is an answer to give, in fact it is a person who took the trouble disarm dozens of phones and explains step by step what each phone has in, perhaps they serve some purpose.
We're talking about a British site called Uselessinfo.pwp.blueyonder.co.uk, Showing different images how a cell is dismantled of a certain brand and model and what each has in it.
Maybe this site will teach you something, or perhaps may come of curiosity (to see what they have phones in). There are several brands to choose and dozens of models.
Anyway means: go to the below link and choose Nokia among other brands i.e. Ericsson, Sony Ericsson, Motorola and others. Nothing better to start a cellular technician cure.